The reports come just two weeks after the islands were put on the green list. As these islands are on the green list, returning Britons do not need to self-isolate.
The Government website states the Balearic islands (Formentera, Ibiza, Mallorca, Menorca) are on the green list, however it adds that they are specifically on a “green watchlist”.
This means they are at risk of moving from green to amber.
Meanwhile, mainland Spain and the Canary Islands are on the amber list.
Cases have tripled in Spain over the past fortnight, rising to 368 cases per 100,000 people.
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There were more than 21,000 new cases on July 9 in Spain.
The Government currently says people should not travel to amber list countries or territories.
If a person arrives in England from an amber list country, they will need to quarantine.
This needs to be done at home or in the place they are staying, for 10 days.
Furthermore, travellers will need to take a COVID-19 test on or before day two and on or after day eight.
“Children aged four and under do not need to take the day two or day eight test,” the Government has confirmed.
Some may be able to end their quarantine prior to this 10 day period, via the Test to Release scheme.
The Government states: “You may be able to end quarantine early if you pay for a private COVID-19 test through the Test to Release scheme.”
People arriving in England from a green list country must take a COVID-19 test on or before day two after they arrive.
If the test result is negative, they won’t need to quarantine.
However, they will need to quarantine if NHS Test & Trace states they travelled to England with someone who did test positive for the virus.
“You must quarantine if NHS Test & Trace informs you that you travelled to England with someone who has tested positive for COVID-19,” GOV.UK explains.
Children aged four and under don’t need to take this test.